package com.hmall.order.interceptors;

import com.hmall.order.utils.UserHolder;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Slf4j
public class UserInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1 获取请求头
        String authirization = request.getHeader("authorization");
        if (StringUtils.isBlank(authirization)){
            log.warn("非法用户访问！请求路径:{}",request.getRequestURI());
            //没有用户信息，未登陆403禁止
            response.setStatus(403);
            return false;
        }
        //2 转换用户id
        Long userId = Long.valueOf(authirization);
        //3 存入ThreadLocal
        UserHolder.setUser(userId);
        //3 放行
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // 用完不要忘了清理
        UserHolder.removeUser();
    }
}
